[KYUUBI #6316] Support switching jdbc dialect based on session conf

# 🔍 Description
## Issue References 🔗

This pull request fixes #6316

## Describe Your Solution 🔧

Now JDBC engine using the overlay conf as session conf,  The ConnectionProvider will switch depending on the session conf. Therefore, we should also select the JDBC dialect based on the session conf.

## Types of changes 🔖

- [ ] Bugfix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)

## Test Plan 🧪

#### Behavior Without This Pull Request ⚰️

#### Behavior With This Pull Request 🎉

#### Related Unit Tests

---

# Checklist 📝

- [x] This patch was not authored or co-authored using [Generative Tooling](https://www.apache.org/legal/generative-tooling.html)

**Be nice. Be informative.**

Closes #6202 from lsm1/branch-support-switch-provider.

Closes #6316

adac785 [senmiaoliu] support switch dialect of session

Authored-by: senmiaoliu <senmiaoliu@trip.com>
Signed-off-by: Shaoyun Chen <csy@apache.org>

externals/kyuubi-jdbc-engine/src/main/scala/org/apache/kyuubi/engine/jdbc/operation/JdbcOperation.scala

@@ -20,6 +20,7 @@ import org.apache.kyuubi.{KyuubiSQLException, Utils}
 import org.apache.kyuubi.config.KyuubiConf
 import org.apache.kyuubi.engine.jdbc.dialect.{JdbcDialect, JdbcDialects}
 import org.apache.kyuubi.engine.jdbc.schema.{Row, Schema}
+import org.apache.kyuubi.engine.jdbc.session.JdbcSessionImpl
 import org.apache.kyuubi.operation.{AbstractOperation, FetchIterator, OperationState}
 import org.apache.kyuubi.operation.FetchOrientation.{FETCH_FIRST, FETCH_NEXT, FETCH_PRIOR, FetchOrientation}
 import org.apache.kyuubi.session.Session
@@ -31,7 +32,7 @@ abstract class JdbcOperation(session: Session) extends AbstractOperation(session
 
   protected var iter: FetchIterator[Row] = _
 
-  protected lazy val conf: KyuubiConf = session.sessionManager.getConf
+  protected lazy val conf: KyuubiConf = session.asInstanceOf[JdbcSessionImpl].sessionConf
 
   protected lazy val dialect: JdbcDialect = JdbcDialects.get(conf)
 

externals/kyuubi-jdbc-engine/src/main/scala/org/apache/kyuubi/engine/jdbc/session/JdbcSessionImpl.scala

@@ -45,7 +45,7 @@ class JdbcSessionImpl(
 
   private var databaseMetaData: DatabaseMetaData = _
 
-  private val kyuubiConf: KyuubiConf = normalizeConf
+  val sessionConf: KyuubiConf = normalizeConf
 
   private def normalizeConf: KyuubiConf = {
     val kyuubiConf = sessionManager.getConf.clone
@@ -60,13 +60,13 @@ class JdbcSessionImpl(
   override def open(): Unit = {
     info(s"Starting to open jdbc session.")
     if (sessionConnection == null) {
-      sessionConnection = ConnectionProvider.create(kyuubiConf)
+      sessionConnection = ConnectionProvider.create(sessionConf)
       databaseMetaData = sessionConnection.getMetaData
     }
     KyuubiJdbcUtils.initializeJdbcSession(
-      kyuubiConf,
+      sessionConf,
       sessionConnection,
-      kyuubiConf.get(ENGINE_JDBC_SESSION_INITIALIZE_SQL))
+      sessionConf.get(ENGINE_JDBC_SESSION_INITIALIZE_SQL))
     super.open()
     info(s"The jdbc session is started.")
   }